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On this day in space! Dec. 23, 1672: Giovanni Cassini discovers Saturn's moon Rhea
By Hanneke Weitering last updated
On Dec. 23, 1672, Italian astronomer Giovanni Cassini discovered Rhea, Saturn's second-largest moon. Rhea is made up of rock and ice and is covered in craters.
SpaceX launches 21 Starlink internet satellites from Florida, lands rocket at sea (video, photos)
By Mike Wall published
SpaceX launched 21 Starlink internet satellites from Florida's Space Coast early Monday morning (Dec. 23) and landed the returning rocket on a ship at sea.
Space2Sea Antarctica: William Shatner, Neil deGrasse Tyson and NASA astronauts talk exploration and science from the Drake Passage
By Gabe Castro-Root published
Explorers, astronauts and filmmakers described life in space and on Earth in an epic livestream from the Drake Passage.
You can now wear an Apollo Guidance Computer keypad as a wristwatch
By Robert Z. Pearlman published
NASA's Apollo spacecraft had briefcase-size computers that for their day would normally have filled two rooms. Apollo Instruments has been able to shrink the Apollo Guidance Computer even more.
Rocket Lab launches private Earth-imaging satellite to orbit on its final flight of 2024 (video)
By Mike Wall last updated
Rocket Lab launched a radar satellite for the Earth-observation company Synspective to orbit today (Dec. 21) on its final mission of the year.
Planes, drones or UFOs: What are people seeing in the New Jersey sky?
By Leonard David published
Recent sightings of unidentified aircraft in New Jersey and other states have triggered another round of unanswered questions — and fueled conspiracy theories.
SpaceX launches 30 satellites on Bandwagon-2 rideshare mission (video)
By Mike Wall last updated
A SpaceX Falcon 9 rocket carrying 30 payloads as part of the Bandwagon-2 mission launches from Vandenberg Space Force Base in California on Saturday, Dec. 21, 2024.
Astronauts on NASA's moon-orbiting Gateway space station will wear smart undershirts to stay healthy
By Tereza Pultarova published
Smart undershirts and AI algorithms will keep astronauts healthy on NASA's planned Gateway moon-orbiting space station.
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